When attempting to open the briefcase, Tatiana Maslany genuinely injured her hand. Her cut knuckles can still be seen healing a couple of episodes later. Also noticeable at the opening of the episode when she gets out of the car and answers the phone; this is because the briefcase scene was filmed first.
When arriving in Alison's (Tatiana Maslany) neighborhood, Sarah passes a sign that names the suburb: 'Bailey Downs.' This is the same fictional neighborhood where the Fitzgerald sisters reside in the Canadian horror film, Ginger Snaps (2000). Tatiana Maslany, and Orphan Black guest star Eric Johnson both starred in the sequel to Ginger Snaps, entitled Ginger Snaps 2: Unleashed (2004).
In the scene during the after-wake-party at Felix's (Jordan Gavaris) house, the character Rockabilly Bob (Marqus Bobesich) gives a speech for Sarah (Tatiana Maslany). His entire speech are some of the lyrics to the song Bummed Out City by Joe Strummer & The Mescaleros.
Felix says he's too Verklempt to say anything at Sarah's wake, a reference to Mike Myers Coffee Talk sketches from Saturday Night Live (1975).